# The compound that is NOT a common component of photochemical smog is :

Question:

The compound that is NOT a common component of photochemical smog is :

1. $\mathrm{O}_{3}$

2. $\mathrm{CH}_{2}=\mathrm{CHCHO}$

3. $\mathrm{CF}_{2} \mathrm{Cl}_{2}$

Correct Option: , 3

Solution:

Freons (CFC's) are not common components of photo chemical smog.